Specifically, avoid building all plugins as non-static objects,
as well as some supplementary libraries. In fact, a large amount
of plugins was already gated to build as shared objects only with
WITHPIC=1, but this was not done consistently.
This gating has been moved to */p/Makefile.
Building these shared objects is a waste of time and breaks
the --without-pic build unless CFLAGS is forced in the make
invocation.
r2 builds currently fail on Bash on Ubuntu on Windows due to the
${NAME} variable being defined in the environment (as the current
hostname), which meant that libbochs.a was being placed in an
unexpected location. This patch fixes the issue for BoUoW by replacing
use of the ${LIB} variable with a set value of 'lib'. It should be
noted that other build scripts (e.g. shlr/bochs/deps.mk) currently
assume that libbochs.a is located precisely at
shlr/bochs/lib/libbochs.a anyway (and as such, it is suspected that
the use of ${LIB} here may have been spurious to begin with).
