Squashed 'bundle/syntax_check_embedded_perl.vim/' content from commit 23cf3f5

git-subtree-dir: bundle/syntax_check_embedded_perl.vim
git-subtree-split: 23cf3f597afba78b0c702916094e0e1fe6b430be
Merge commit '13277c0c48d95176292eb95d6305eee95f75ce45' as 'bundle/syntax_check_embedded_perl.vim'

git-source-repo: git://github.com/vim-scripts/syntax_check_embedded_perl.vim.git
Squashed 'bundle/update_perl_line_directives/' content from commit f746f3b

git-subtree-dir: bundle/update_perl_line_directives
git-subtree-split: f746f3b86f3f42a2c59d60144125c2a63c2ced8f
Merge commit '4b87ef395ce69d724059617de2c6333995913df9' as 'bundle/update_perl_line_directives'

git-source-repo: git://github.com/vim-scripts/update_perl_line_directives.git
add a note on experimenting with subtree vs submodules
the perl embedded syntax check module is... odd
add a teeny "perl_fork" plugin

I'm curious to see if this will help "speed up" git commits/fixups from inside
vim, and also what I can/cannot reasonably do with Perl's fork() in vim.
change \gf to 'call RunGitFixup()'

Trying this out; it won't give us any errors, however, or any indication of
what went on during the fixup, but neither will it disrupt workflow/etc.
Merge remote-tracking branch 'origin/master'