Also export the corresponding variable to make.
libnativehelper's include_deprecated contains all of the
headers that are currently used by libraries without
the "nativehelper/" prefix.
The current count of this is this:
2 ScopedLocalFrame.h
4 JniInvocation.h
4 ScopedBytes.h
5 AsynchronousCloseMonitor.h
6 toStringArray.h
7 ScopedStringChars.h
38 JniConstants.h
41 ScopedPrimitiveArray.h
79 ScopedUtfChars.h
80 UniquePtr.h
100 ScopedLocalRef.h
467 JNIHelp.h
Now we can remove each file from the global header include
on a file by file basis.
Bug: 63762847
Test: libs find their headers
Change-Id: Iffc0c1ceb55cc59dc4a70c75d7c0b9ce8397b2cf