Add script to install build depend for Debian

Add a script debian/deb-build-dep. The script parses debian/control file
and installs the necessary build time dependent packages to the system:

   $ sudo ./debian/deb-build-dep
Debian package: fontforge conflict fontforge-nox

remove sugguestion to install both.
Fix compilation when _NO_TZ is defined
Small Greek Letter MU and the scientific Micro Sign look alike

See thread - subject "[Fontforge-users] Character Glyph questions",
2014jan7 where it was noted that the two characters look alike.
http://sourceforge.net/mailarchive/message.php?msg_id=31817487
Merge pull request #1100 from jtanx/notz

Fix compilation when _NO_TZ is defined
Removed errant call to memset of invalid pointer.

The removed line calls memset() using temp.buffer as its first
argument.  This is unnecessary because neither temp nor temp.buffer is
subsequently used in any reachable code path.  Furthermore, in the
probable case that sc->parent->multilayer is false, temp.buffer will
not have been allocated and its pointer will be null.  It is likely
that the author meant to initialize bitmap.buffer rather than
temp.buffer, but that is unnecessary since bitmap.buffer is allocated
with gcalloc() and thus already zero-filled.
Avoid possibly freeing null pointer.

Added check for null before freeing clipmask, since it is not
guaranteed to have been allocated in the context in which is is being
freed.
Prevent possible leak by freeing temp.buffer outside conditional.

Moved freeing temp.buffer outside of the conditional block to avoid a
potential memory leak if that condition isn't taken.

(This is admittedly an edge case and can only happen if both
sc->parent->multilayer and sc->parent->strokedfont are somehow both
true.)
Merge pull request #1102 from blipvert/fixes/27

Cleaned up pointer and memory usage in SplineCharFreeTypeRasterizeNoHints
Merge pull request #1101 from JoesCat/micro_sign

Small Greek Letter MU and the Scientific Micro Sign look alike
Revert "Small Greek Letter MU and the Scientific Micro Sign look alike"

Although the Micro Sign is based on the Greek lower-case MU, the
Small Greek Letter Mu (u+3bc) and the Micro Sign (u+b5) can differ.
Micro Sign is usually designed in order to correspond Latin letters,
for example it may have serifs. Mu is designed in the style of
classical Greek. See issue #1101 for more info.
Add F/B speed keys for switching layers
Merge pull request #1103 from mhosken/master

Add F/B speed keys for switching layers
Add task notes.
Put back code which displays cv->gi bitmap when not using cairo.
Stop changing a const char* argument to SFGetChar.
A hand made fonts.conf to limit the initial search time.
I've left ~/.fonts there to make it nicer for custom fonts for folks
(takes little time to scan empty dir).

Also some of the X11 paths need to be there for some fonts to be found,
and explicitly the X11/../misc dir to get the little command glyph.
Merge pull request #1106 from monkeyiq/2014jan/issues/1019

A hand made fonts.conf to limit the initial search time.
Dont override the fonts.conf with the one from the system. Use the
hand crafted one that was added instead.
Merge pull request #1107 from monkeyiq/2014jan/issues/1019v2

Dont override the fonts.conf with the one from the system. Use the