bugfix: compilation errors with nginx older than 1.0.0.
no longer set RPATH for luajit lib in the developer build script; also updated valgrind.suppress for luajit using system malloc.
updated valgrind.suppress when the sysmalloc is used.
removed valgrind suppression rules for LuaJIT.
add debugging logs for the Lua VM initialization and shutdown.
fixed a test title.
bugfix: ngx.re.match: the ctx table's "pos" field should start from 1 instead of 0.
updated docs to reflect recent changes.
minor coding style fixes.
updated tests to reflect the fix in commit ccb0cbe0d.
feature: added new API function ngx.re.find, which is similar to ngx.re.match, but only returns the beginning index and end index of the whole match.
added tests for ngx.re.find.
updated .gitignore a bit.
Merge branch 'master' into ffi