Many of the directories in progs/ were missing .gitignore files or
were tracking generated files. This patch is basically the process of
running `make' in each directory and then finding the untracked files
with `git-ls-files -o --exclude-per-directory=.gitignore'. The existing
files were also sorted.
Improve the behaviour of the build system wrt depend files.
- Remove the -Y option for makedepend, so that the standard
directories are searched
- No longer pipe the multiple errors that the -Y option caused
into /dev/null -- we want to know about these failures.
- Fix up a few other misc makedepend failures.
Build fixing for FreeBSD. GNU make is installed as gmake, so make a MAKE
variable (defaults to "make") and use that. Use the MKDEP and MKDEP_OPTIONS
more. Our shell isn't bash, so change the instances of ">& /dev/null" to a more
compatible "> /dev/null 2>&1".