Fixes for legacy audio

Conflicts:

	include/system/audio.h
do not change umask of forked processes to 077
init: Add support for properties expansion in exec command

Add Android properties expansion to 'exec' arguments.
E.g.  exec /system/bin/log ${sys.usb.config}

CRs-Fixed: 390942
Change-Id: Ie520396d951e578bd9f591734a45d2f460b8f51d

Conflicts:

	init/builtins.c
init: Check for symlinks with lstat() not open()

Using open() with an O_NOFOLLOW flag will result in a file falsely
being determined to be a symlink if the open fails for another
reason.

For example, a character device that isn't ready due to the
underlying hardware not being initialized yet will fail to open()

An example of this are any CG2900 device files prior to
execution of ste-cg29xx_ctrl

This uses lstat() instead of open() with O_NOFOLLOW to check
whether a file is a symlink or not.

Change-Id: Ie0d8d94b426c84c29b1b04d41a4cc15536cb307c
core: Add some static libraries

 * Add static versions of libdiskconfig and libsysutils for MiniVold

Change-Id: I9ea9498dcff3f094bbcbb1e05e6d10bc9b83ac74
Add libminshacrypt static lib

This is a sha-only version of libmincrypt, to provide the new
SHA_hash implementation to binaries that require libcrypto_static
remove libion
New fix for 4.3 gralloc
Improve exec command processing

- Make exec print out an error if execve() failed for some reason
- Pass init's environment, created by the export keywords, to the exec'd
  command, which is helpful when running shell scripts (for PATH) and/or
  am (for BOOTCLASSPATH) from an exec statement.

Conflicts:
	init/builtins.c

Conflicts:

	init/builtins.c

Conflicts:

	init/builtins.c