libs.am/AR = ar

[Ralf Corsepius]

Simple question:

Why is AR = ar hard-coded into libs.am?

if %?FIRST%
AR = ar
## For now this is detected when we see AC_PROG_RANLIB
## RANLIB = @RANLIB@
endif %?FIRST%

This assumes the archiver always to be called "ar", which is just not
correct. 

For example

This causes cross-compiled packages which apply 
AC_CHECK_TOOL(AR,ar)
to silently use "ar" instead of the desired @address@hidden 

Not worth mentioning toolchains where the "archiver" has a completely
different name.

At least I have found myself having to explicitly put 
AR = @AR@ 
into all Makefile.ams to get the correct ar for cross-toolchains.

Ralf