add uiMaxNalSize to support the maximum nal size setting
Move the RC_MODES enum to the public header

This allows users to know what values to set for the iRCMode
parameter.
Make the iRCMode field use the RC_MODES type instead of plain int

This makes it even clearer for users about how to set this field.
Fix line endings in manifest files

Fixes build error in Android getting TOOLCHAINPREFIX
in build/platform-android.mk:

$NDKROOT/build/gmsl/__gmsl:512: *** non-numeric second argument to `wordlist' function: ''.  Stop.