really free the memory for a font we close
[Fontforge-devel] aarch64 support for autotools

aarch64 is going to arrive later this year, and support for configuring
and building on it landed in autoconf 2.69. Currently fontforge has an
older version of autoconf used.

Graphical flowchart for build environment shown here:
http://en.wikipedia.org/wiki/Autoconf
check consistency of glyph counts on input and output, and document it
prevent RemoveUnused from removing slots that the encoding requires

If you want to do that, you should re-encode first.  Note that it already
wouldn't remove any slots before the last used slot, so it's clear that this
command would never have been able to *really* remove all unused slots in
encodings that required them to remain.  Its intended use seems to have been
for removing unused unencoded slots at the end.
tighten up some boundary cases
check consistency of glyph counts on input and output, and document it
prevent RemoveUnused from removing slots that the encoding requires

If you want to do that, you should re-encode first.  Note that it already
wouldn't remove any slots before the last used slot, so it's clear that this
command would never have been able to *really* remove all unused slots in
encodings that required them to remain.  Its intended use seems to have been
for removing unused unencoded slots at the end.
tighten up some boundary cases
Merge branch 'check_glyph_count' of github.com:mskala/fontforge into check_glyph_count
Merge pull request #481 from JoesCat/2013mar26_aarch64_support

2013mar26 aarch64 support
Merge pull request #480 from mskala/script_close_leak

Memory leak in script Close()
Merge pull request #520 from mskala/check_glyph_count

Check consistency of encoding slot counts on input and output, and document it
Revert autoconf requirement to 2.68
Reverting 9a87658b944e78fd7bf94c4eb921954f4013a253
Add svg2glyph example script
Fix a thinko introduced in c852d95

When checking for lookup type in feature block, stop at feature limit
not a non-existing lookup limit; I blindly copy pasted that block of
code. This was causing all features to be of multiple substitution type
if one of them has a multiple substitution.