Patch texi2pod.pl for perl-5.14+

As described in #200. Similar to #198, this time just needed to
add * bullets to the =item lines to avoid pod errors for the wget
exit codes.
Makefile: add g++ to requirements check
Merge pull request #201 from tm604/wget-pod-fixes

Patch texi2pod.pl for perl-5.14+
package wget: enable mingw-w64 builds
packages libxslt xmlwrapp: enable mingw-w64 builds
add gits directory to .gitignore
package xine-lib: fix update macro
package portmidi: fix test program and enable mingw-w64 builds