The mapfiles are currently used when building libmawt_g.so for 1.2 and 2.1
(but not headless). This should probably be changed. Compare the following
two makefiles:

In make/sun/awt/mawt.gmk:

ifndef HEADLESS
FILES_m = ../awt/mapfile-mawt-vers
endif

In make/common/Mapfile-vers.gmk:

# Only the optimized one has the full versioning mapfile
ifeq ($(VARIANT), OPT)
  ifndef FILES_m
    FILES_m = mapfile-vers
  endif
  ...