vim: fix shebangs when cross-compiling
vim: fix shebangs when cross-compiling

vim does its own shebang patching, which ends up pulling in build platform
tools. This commit patches the build system to use HOST_PATH instead.

I also enabled strictDeps and added additional dependencies needed to make
patchShebangs work on some of the other scripts.

This commit brings the cross-compiled package in line with the native one, but
even the native build has some unpatched shebang references to python, perl and
csh. Additionally, efm_perl.pl has a broken shebang (#! -w) because vim's
build system can't handle not finding perl.

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