Start an android-only branch without any code from i2p.i2p.

Next step: Update the scripts and docs to point to
../i2p.i2p/ for everything.

scripts/setversion.sh

@@ -0,0 +1,59 @@
+#
+#  Get the version number and fix up AndroidManifest.xml
+#  Public domain
+#
+THISDIR=$(realpath $(dirname $(which $0)))
+cd $THISDIR
+MANIFEST=../AndroidManifest.xml
+TMP=AndroidManifest.xml.tmp
+
+CORE=`grep 'public final static String VERSION' ../../core/java/src/net/i2p/CoreVersion.java | \
+         cut -d '"' -f 2`
+
+MAJOR=`echo $CORE | cut -d '.' -f 1`
+MINOR=`echo $CORE | cut -d '.' -f 2`
+RELEASE=`echo $CORE | cut -d '.' -f 3`
+
+ROUTERBUILD=$((`grep 'public final static long BUILD' ../../router/java/src/net/i2p/router/RouterVersion.java | \
+         cut -d '=' -f 2 | \
+         cut -d ';' -f 1`))
+
+ANDROIDBUILD=`grep 'build.number' build.number | \
+         cut -d '=' -f 2`
+
+SDK=`grep 'android:minSdkVersion' $MANIFEST | \
+         cut -d '"' -f 2`
+
+# don't let build number get too long
+VERSIONSTRING="${CORE}-${ROUTERBUILD}_b$(($ANDROIDBUILD % 256))-SDK$SDK"
+
+#
+# Android version code is an integer.
+# So we have 31 bits.
+# MAJOR	 	4 bits 0-15
+# MINOR 	8 bits 0-255
+# RELEASE	8 bits 0-255
+# ROUTERBUILD	8 bits 0-255
+# ANDROIDBUILD	3 bits 0-7
+#
+# Note that ANDROIDBUILD is modded % 8, it will wrap,
+# beware of that if you release multiple builds using the
+# same ROUTERBUILD, or clear it if you update ROUTERBUILD
+#
+VERSIONINT=$(( \
+		(($MAJOR % 16) << 27) + \
+		(($MINOR % 256) << 19) + \
+		(($RELEASE % 256) << 11) + \
+		(($ROUTERBUILD % 256) << 3) + \
+		 ($ANDROIDBUILD % 8) \
+	      ))
+
+echo "Android version: '$VERSIONSTRING' (${VERSIONINT})"
+echo "my.version.name=${VERSIONSTRING}" > version.properties
+echo "my.version.code=${VERSIONINT}" >> version.properties
+
+SUBST='s/android.versionCode="[0-9]"/android.versionCode="'${VERSIONINT}'"/'
+sed "$SUBST" < $MANIFEST > $TMP
+SUBST='s/android.versionName="[^"]*"/android.versionName="'${VERSIONSTRING}'"/'
+sed "$SUBST" < $TMP > $MANIFEST
+rm -f $TMP