I changed the %.gmo rule in po/Makefile to use $@ instead of a shell
variable, and made various tweaks in it to better support strange file
names, e.g. spaces in $(srcdir). I suppose other makefiles in ELinks and
other rules in po/Makefile do not support those, but one must start
somewhere. I don't think it will ever be feasible to support backslashes
and quotes without horrible contortions, but spaces and dashes should be
doable.
I also quoted the ~ in --check-accelerators=~ in case some shell might want
to expand it as the home directory. Bash 3.00.16(1) doesn't because the
word contains dashes.
According to the documentation, GNU Make uses them only for suffix rules,
which have been replaced with pattern rules in po/Makefile. The makefiles
included by po/Makefile do not define suffix rules, either.
Involves prefixing with $(srcdir) to some of the build rule variables. For
the builddir we create Makefiles which simply include the srcdir Makefile.
Add list make rule to get list of Makefiles to generate (find will get it
wrong for builddirs nested in srcdir).
There are still a few minor issues like the file paths echoed during make
install ...
Makes it more obvious which files are actually installed. MKINSTALLDIRS
still spurs out a lot of 'mkdir ...', which probably should also be
silenced when V=0.
