Address review comments:

- rename CHANGES.md section from "Breaking Changes" to "Important Changes"
- add entries for darwin-ppc and darwin-x86 to build system so that
  interested parties can more easily build JNA for old architectures

CHANGES.md

@@ -13,8 +13,8 @@ Bug Fixes
 ---------
 
 
-Breaking Changes
-----------------
+Important Changes
+-----------------
 * `RESOURCE_PREFIX` for darwin (mac OS) was changed from `darwin` to
   `darwin-$arch` as the fat binaries on mac OS causes various problems:
   It was reported, that binaries were rejected from the appstore because x86

build.xml

@@ -523,6 +523,12 @@ processor=x86;osname=openbsd,
 com/sun/jna/openbsd-x86-64/libjnidispatch.so;
 processor=x86-64;osname=openbsd,
 
+com/sun/jna/darwin-ppc/libjnidispatch.jnilib;
+osname=macosx;processor=ppc,
+com/sun/jna/darwin-ppc64/libjnidispatch.jnilib;
+osname=macosx;processor=ppc64,
+com/sun/jna/darwin-x86/libjnidispatch.jnilib;
+osname=macosx;processor=x86,
 com/sun/jna/darwin-x86-64/libjnidispatch.jnilib;
 osname=macosx;processor=x86-64,
 com/sun/jna/darwin-aarch64/libjnidispatch.jnilib;
@@ -567,6 +573,15 @@ osname=macosx;processor=aarch64
       <zipfileset src="${lib.native}/aix-ppc64.jar"
                   includes="*jnidispatch*"
                   prefix="com/sun/jna/aix-ppc64"/>
+      <zipfileset src="${lib.native}/darwin-ppc.jar"
+                  includes="*jnidispatch*"
+                  prefix="com/sun/jna/darwin-ppc"/>
+      <zipfileset src="${lib.native}/darwin-ppc64.jar"
+                  includes="*jnidispatch*"
+                  prefix="com/sun/jna/darwin-ppc64"/>
+      <zipfileset src="${lib.native}/darwin-x86.jar"
+                  includes="*jnidispatch*"
+                  prefix="com/sun/jna/darwin-x86"/>
       <zipfileset src="${lib.native}/darwin-x86-64.jar"
                   includes="*jnidispatch*"
                   prefix="com/sun/jna/darwin-x86-64"/>