[HAX] Allow per-target dtbTool

 * Revert this when fixed

Change-Id: I97ecb0448ae7bd5859454be290c5dde6248b2859
gettop: fix symlink detection

Summary: We must use the -P flag for pwd to properly get $PWD from the environment *with* symlinks. Otherwise symlink
detection is broken and anything we do using $(gettop) at the top of a symlinked path won't work properly. I noticed this
issue while running on a system that has a SSD RAID symlinked to my android build home directory, which is ~/ssd_storage.
The top in this instance is a symlink, which means that gettop() returns my home path, or the path above the symlink
directory (but not the symlinked directory). This is a major issue in case developers choose to use $(gettop),
$ANDROID_BUILD_TOP, or $T (doesn't really matter either way).

Test Plan: Create a symlink and sync android source into the path. Open up the symlink, run envsetup.sh, and check
$(gettop) output.

While this isn't the best solution, it fixes an issue without creating new issues.

Change-Id: I65bc345753805e6161098d2af6e0bee0b07d37b1
Telephony(MSIM) : Add telephony-msim jar to build

Enable telephony-msim jar by adding it in PRODUCT_BOOT_JARS
 and PRODUCT_PACKAGES

Change-Id: Ibc80a19d3e0c39dfbe885916d61147055f3801a9
(cherry picked from commit b9ebc2172e9b646cb573fa5610f8a2829874b2a7)
(cherry picked from commit 2aff65e670639f07c0962f04b65f812618a181b9)
Store the value from BOARD_CUSTOM_BOOTIMG_MK to a file

This is needed so it can be read in when re-signing a package to
use the proper boot image.

Print notice when using a custom bootimage makefile

Change-Id: I6baab9f8964ce5d4fa9487f2859af9c385d7b21b
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_build into cm-11.0