Patches for test suite on sunos

The following set of patches is a subset of patches I created while trying to compile on solaris and get the test suite running. Except for the patches to the perl modules section, the rest all deal with the test suite. I think these are general improvements (or benign changes) and so I am submitting them.

With these patches and the others which I will maintain privately, I can compile git on solaris using the native c compiler and pass nearly all of the test suite with the native shell in /usr/xpg4/bin/sh (i.e. ksh). The remaining bits of the test suite that do not pass are related to a broken iconv or an ancient build environment.

Here are the tests I am skipping:

GIT_SKIP_TESTS='
   t3900.1[0-289] t3900.2[023]
   t3901.*
   t5000.1[0-24-689] t5000.2[01]
   t5100.[56] t5100.10
   t6030.1[2-9] t6030.2[0-9]
   t9301.4
'

-brandon