Rename help function in envsetup.sh to be hmm
Rename help function in envsetup.sh to be hmm

Bash has a built-in command "help" that is useful for getting
help on bash commands without wading through the bash man page
(e.g. "help test" will give you the syntax for those "if [ ]"
expressions).  Overwriting a built-in with a convenience function
is not good.

The function "hmm" was added recently that serves much the same
purpose as help.  It seems like a good idea to remove the new
"hmm" command and rename "help" to be "hmm" so we no longer
overwrite the built-in.

Change-Id: I2079b3e6a10715956ec077d31e817a939c6ee4a0
Signed-off-by: Scott Anderson <61144c09f35f1fd6d75265ceaf5bc8757c3a46c3@android.com>

xorware/android_build,pranav01/platform_manifest,see4ri/lolili,fallouttester/platform_manifest,xorware/android_build,xorware/android_build,RR-msm7x30/platform_manifest,hagar006/platform_manifest,xorware/android_build,Hybrid-Power/startsync,ND-3500/platform_manifest,xorware/android_build,knone1/platform_manifest