Merge branch 'rj/test-regex'

Git ships with a fall-back regexp implementation for platforms with
buggy regexp library; give people a tool to see if they should be
using it on their platform.

* rj/test-regex:
  test-regex: Add a test to check for a bug in the regex routines

diff --cc .gitignore
index bb5c91e712349686ccd008d9ccfd5fa8c2320834,d284b058a33dfa8235d8608a89a500bfef1c1028..68fe464090606b95b40b8b99e2454edb52862abe
--- 1/.gitignore
--- 2/.gitignore
+++ b/.gitignore
@@@ -185,11 -180,11 +185,12 @@@
  /test-index-version
  /test-line-buffer
  /test-match-trees
 +/test-mergesort
  /test-mktemp
 -/test-obj-pool
  /test-parse-options
  /test-path-utils
+ /test-regex
 +/test-revision-walking
  /test-run-command
  /test-sha1
  /test-sigchain

diff --cc Makefile
index 66e82167eb213c78270cf240172857f42a95739f,d2b145b533485d9064c5e2db76949dd5b3a41863..26b697d1756dac4f37e04b8857ca9ea15df7d18d
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -492,17 -472,18 +492,18 @@@ TEST_PROGRAMS_NEED_X += test-genrando
  TEST_PROGRAMS_NEED_X += test-index-version
  TEST_PROGRAMS_NEED_X += test-line-buffer
  TEST_PROGRAMS_NEED_X += test-match-trees
 +TEST_PROGRAMS_NEED_X += test-mergesort
  TEST_PROGRAMS_NEED_X += test-mktemp
 -TEST_PROGRAMS_NEED_X += test-obj-pool
  TEST_PROGRAMS_NEED_X += test-parse-options
  TEST_PROGRAMS_NEED_X += test-path-utils
+ TEST_PROGRAMS_NEED_X += test-regex
 +TEST_PROGRAMS_NEED_X += test-revision-walking
  TEST_PROGRAMS_NEED_X += test-run-command
 +TEST_PROGRAMS_NEED_X += test-scrap-cache-tree
  TEST_PROGRAMS_NEED_X += test-sha1
  TEST_PROGRAMS_NEED_X += test-sigchain
 -TEST_PROGRAMS_NEED_X += test-string-pool
  TEST_PROGRAMS_NEED_X += test-subprocess
  TEST_PROGRAMS_NEED_X += test-svn-fe
 -TEST_PROGRAMS_NEED_X += test-treap
  
  TEST_PROGRAMS = $(patsubst %,%$X,$(TEST_PROGRAMS_NEED_X))