test: Move corpus emails into maildir directory structure

Now that we have maildir synchronization turned on by default, it's
advantageous to make all of the tests exercise it as much as possible.

diff --git a/test/corpus/01 b/test/corpus/cur/01:2,
similarity index 100%
rename from test/corpus/01
rename to test/corpus/cur/01:2,

diff --git a/test/corpus/02 b/test/corpus/cur/02:2,
similarity index 100%
rename from test/corpus/02
rename to test/corpus/cur/02:2,

diff --git a/test/corpus/03 b/test/corpus/cur/03:2,
similarity index 100%
rename from test/corpus/03
rename to test/corpus/cur/03:2,

diff --git a/test/corpus/04 b/test/corpus/cur/04:2,
similarity index 100%
rename from test/corpus/04
rename to test/corpus/cur/04:2,

diff --git a/test/corpus/05 b/test/corpus/cur/05:2,
similarity index 100%
rename from test/corpus/05
rename to test/corpus/cur/05:2,

diff --git a/test/corpus/06 b/test/corpus/cur/06:2,
similarity index 100%
rename from test/corpus/06
rename to test/corpus/cur/06:2,

diff --git a/test/corpus/07 b/test/corpus/cur/07:2,
similarity index 100%
rename from test/corpus/07
rename to test/corpus/cur/07:2,

diff --git a/test/corpus/08 b/test/corpus/cur/08:2,
similarity index 100%
rename from test/corpus/08
rename to test/corpus/cur/08:2,

diff --git a/test/corpus/09 b/test/corpus/cur/09:2,
similarity index 100%
rename from test/corpus/09
rename to test/corpus/cur/09:2,

diff --git a/test/corpus/10 b/test/corpus/cur/10:2,
similarity index 100%
rename from test/corpus/10
rename to test/corpus/cur/10:2,

diff --git a/test/corpus/11 b/test/corpus/cur/11:2,
similarity index 100%
rename from test/corpus/11
rename to test/corpus/cur/11:2,

diff --git a/test/corpus/12 b/test/corpus/cur/12:2,
similarity index 100%
rename from test/corpus/12
rename to test/corpus/cur/12:2,

diff --git a/test/corpus/13 b/test/corpus/cur/13:2,
similarity index 100%
rename from test/corpus/13
rename to test/corpus/cur/13:2,

diff --git a/test/corpus/14 b/test/corpus/cur/14:2,
similarity index 100%
rename from test/corpus/14
rename to test/corpus/cur/14:2,

diff --git a/test/corpus/15 b/test/corpus/cur/15:2,
similarity index 100%
rename from test/corpus/15
rename to test/corpus/cur/15:2,

diff --git a/test/corpus/16 b/test/corpus/cur/16:2,
similarity index 100%
rename from test/corpus/16
rename to test/corpus/cur/16:2,

diff --git a/test/corpus/17 b/test/corpus/cur/17:2,
similarity index 100%
rename from test/corpus/17
rename to test/corpus/cur/17:2,

diff --git a/test/corpus/18 b/test/corpus/cur/18:2,
similarity index 100%
rename from test/corpus/18
rename to test/corpus/cur/18:2,

diff --git a/test/corpus/19 b/test/corpus/cur/19:2,
similarity index 100%
rename from test/corpus/19
rename to test/corpus/cur/19:2,

diff --git a/test/corpus/20 b/test/corpus/cur/20:2,
similarity index 100%
rename from test/corpus/20
rename to test/corpus/cur/20:2,

diff --git a/test/corpus/21 b/test/corpus/cur/21:2,
similarity index 100%
rename from test/corpus/21
rename to test/corpus/cur/21:2,

diff --git a/test/corpus/22 b/test/corpus/cur/22:2,
similarity index 100%
rename from test/corpus/22
rename to test/corpus/cur/22:2,

diff --git a/test/corpus/23 b/test/corpus/cur/23:2,
similarity index 100%
rename from test/corpus/23
rename to test/corpus/cur/23:2,

diff --git a/test/corpus/24 b/test/corpus/cur/24:2,
similarity index 100%
rename from test/corpus/24
rename to test/corpus/cur/24:2,

diff --git a/test/corpus/25 b/test/corpus/cur/25:2,
similarity index 100%
rename from test/corpus/25
rename to test/corpus/cur/25:2,

diff --git a/test/corpus/26 b/test/corpus/cur/26:2,
similarity index 100%
rename from test/corpus/26
rename to test/corpus/cur/26:2,

diff --git a/test/corpus/27 b/test/corpus/cur/27:2,
similarity index 100%
rename from test/corpus/27
rename to test/corpus/cur/27:2,

diff --git a/test/corpus/28 b/test/corpus/cur/28:2,
similarity index 100%
rename from test/corpus/28
rename to test/corpus/cur/28:2,

diff --git a/test/corpus/29 b/test/corpus/cur/29:2,
similarity index 100%
rename from test/corpus/29
rename to test/corpus/cur/29:2,

diff --git a/test/corpus/30 b/test/corpus/cur/30:2,
similarity index 100%
rename from test/corpus/30
rename to test/corpus/cur/30:2,

diff --git a/test/corpus/31 b/test/corpus/cur/31:2,
similarity index 100%
rename from test/corpus/31
rename to test/corpus/cur/31:2,

diff --git a/test/corpus/32 b/test/corpus/cur/32:2,
similarity index 100%
rename from test/corpus/32
rename to test/corpus/cur/32:2,

diff --git a/test/corpus/33 b/test/corpus/cur/33:2,
similarity index 100%
rename from test/corpus/33
rename to test/corpus/cur/33:2,

diff --git a/test/corpus/34 b/test/corpus/cur/34:2,
similarity index 100%
rename from test/corpus/34
rename to test/corpus/cur/34:2,

diff --git a/test/corpus/35 b/test/corpus/cur/35:2,
similarity index 100%
rename from test/corpus/35
rename to test/corpus/cur/35:2,

diff --git a/test/corpus/36 b/test/corpus/cur/36:2,
similarity index 100%
rename from test/corpus/36
rename to test/corpus/cur/36:2,

diff --git a/test/corpus/37 b/test/corpus/cur/37:2,
similarity index 100%
rename from test/corpus/37
rename to test/corpus/cur/37:2,

diff --git a/test/corpus/38 b/test/corpus/cur/38:2,
similarity index 100%
rename from test/corpus/38
rename to test/corpus/cur/38:2,

diff --git a/test/corpus/39 b/test/corpus/cur/39:2,
similarity index 100%
rename from test/corpus/39
rename to test/corpus/cur/39:2,

diff --git a/test/corpus/40 b/test/corpus/cur/40:2,
similarity index 100%
rename from test/corpus/40
rename to test/corpus/cur/40:2,

diff --git a/test/corpus/41 b/test/corpus/cur/41:2,
similarity index 100%
rename from test/corpus/41
rename to test/corpus/cur/41:2,

diff --git a/test/corpus/42 b/test/corpus/cur/42:2,
similarity index 100%
rename from test/corpus/42
rename to test/corpus/cur/42:2,

diff --git a/test/corpus/43 b/test/corpus/cur/43:2,
similarity index 100%
rename from test/corpus/43
rename to test/corpus/cur/43:2,

diff --git a/test/corpus/44 b/test/corpus/cur/44:2,
similarity index 100%
rename from test/corpus/44
rename to test/corpus/cur/44:2,

diff --git a/test/corpus/45 b/test/corpus/cur/45:2,
similarity index 100%
rename from test/corpus/45
rename to test/corpus/cur/45:2,

diff --git a/test/corpus/46 b/test/corpus/cur/46:2,
similarity index 100%
rename from test/corpus/46
rename to test/corpus/cur/46:2,

diff --git a/test/corpus/47 b/test/corpus/cur/47:2,
similarity index 100%
rename from test/corpus/47
rename to test/corpus/cur/47:2,

diff --git a/test/corpus/48 b/test/corpus/cur/48:2,
similarity index 100%
rename from test/corpus/48
rename to test/corpus/cur/48:2,

diff --git a/test/corpus/49 b/test/corpus/cur/49:2,
similarity index 100%
rename from test/corpus/49
rename to test/corpus/cur/49:2,

diff --git a/test/corpus/50 b/test/corpus/cur/50:2,
similarity index 100%
rename from test/corpus/50
rename to test/corpus/cur/50:2,