This creates the concept of 'event_trigger' vs 'property_trigger'
Previously these were merged into one, such that 'on property:a=b &&
property:b=c' is triggered when properties a=b and b=c as expected,
however combinations such as 'on early-boot && boot' would trigger
during both early-boot and boot. Similarly, 'on early-boot &&
property:a=b' would trigger on both early-boot and again when property
a equals b.
The event trigger distinction ensures that the first example fails to
parse and the second example only triggers on early-boot if
property a equals b.
This coalesces Actions with the same triggers into a single Action object
Change-Id: I8f661d96e8a2d40236f252301bfe10979d663ea6
Support added so init scripts can now import directories.
BUG: 22721249
Change-Id: I02b566bfb50ea84469f1ea0c6ad205435a1df286
TEST: Tested importing a folder on arm64 emulator
Helped debug a problem where the N9 bootloader incorrectly
concatenated the various command lines.
Bug: http://b/20906691
Change-Id: I0580b06f4185129c7eedf0bdf74b5ce17f88bf9c
