* ext/extmk.rb (extmake): set library name as source file name in
Init_ext(). [ruby-dev:21137]
* lib/mkmf.rb (Logging::postpone): postpone logging messages after
heading message as the result of the block.
* lib/mkmf.rb (macro_defined?): append newline to src unless ended
with it.
* lib/mkmf.rb (have_library): allow nil function name to just
append a library. (ruby-bugs:PR#1083)
* lib/mkmf.rb (pkg_config): should append additional libraries to
$libs but not $LIBS. [ruby-dev:21137]
* ext/io/wait/extconf.rb: check DOSISH macro instead of platform.
* ext/digest/sha1/extconf.rb: have_library already appends library
name.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4337 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
