[PATCH v3 1/9] build: drop the -Wswitch-enum warning

diff --git a/2c/25c369505ea5b06ee05ab19f8a575edba9ca09 b/2c/25c369505ea5b06ee05ab19f8a575edba9ca09
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+From: Jani Nikula <jani@nikula.org>\r
+To: notmuch@notmuchmail.org,\r
+       David Bremner <david@tethera.net>\r
+Subject: [PATCH v3 1/9] build: drop the -Wswitch-enum warning\r
+Date: Thu, 13 Sep 2012 00:27:18 +0300\r
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+\r
+-Wswitch-enum is a bit awkward if a switch statement is intended to\r
+handle just some of the named codes of an enumeration especially, and\r
+leave the rest to the default label.\r
+\r
+We already have -Wall, which enables -Wswitch by default, and per GCC\r
+documentation, "The only difference between -Wswitch and this option\r
+[-Wswitch-enum] is that this option gives a warning about an omitted\r
+enumeration code even if there is a default label."\r
+\r
+Drop -Wswitch-enum to not force listing all named codes of\r
+enumerations in switch statements that have a default label.\r
+\r
+---\r
+\r
+This will be useful in the next patch.\r
+---\r
+ configure |    2 +-\r
+ 1 file changed, 1 insertion(+), 1 deletion(-)\r
+\r
+diff --git a/configure b/configure\r
+index acb90a8..afa5c16 100755\r
+--- a/configure\r
++++ b/configure\r
+@@ -532,7 +532,7 @@ fi\r
+ \r
+ WARN_CXXFLAGS=""\r
+ printf "Checking for available C++ compiler warning flags... "\r
+-for flag in -Wall -Wextra -Wwrite-strings -Wswitch-enum; do\r
++for flag in -Wall -Wextra -Wwrite-strings; do\r
+     if ${CC} $flag -o minimal minimal.c > /dev/null 2>&1\r
+     then\r
+       WARN_CXXFLAGS="${WARN_CXXFLAGS}${WARN_CXXFLAGS:+ }${flag}"\r
+-- \r
+1.7.9.5\r
+\r