Move all AOSP code out of recovery binary

Improves license compatibility between GPL and Apache

Change-Id: I2b165aa575bb6213af6b07936f99610c113443f0
diff --git a/install.cpp b/install.cpp
index 4d73aa9..92388e8 100644
--- a/install.cpp
+++ b/install.cpp
@@ -188,7 +188,7 @@
 // commas.  The last key must not be followed by a comma.
 //
 // Returns NULL if the file failed to parse, or if it contain zero keys.
-static RSAPublicKey*
+RSAPublicKey*
 load_keys(const char* filename, int* numKeys) {
     RSAPublicKey* out = NULL;
     *numKeys = 0;