ARM updates

Due to the ABI we are using we have to use the earm architecture
moniker for the build system to behave correctly. This involves
then some headers to move around.

There is also a few related Makefile updates as well as minor
source code corrections.

lib/libcompat_minix/include/evbarm/compat_jmp_buf.h

@@ -0,0 +1,16 @@
+#ifndef _COMPAT_MACHINE_JMP_BUF_H
+#define _COMPAT_MACHINE_JMP_BUF_H
+
+/* This file is strictly dependant on the libc's
+ * setjmp/longjmp code! Keep it in sync! */
+
+/* This is used only by libddekit's src/thread.c. 
+ * Being incredibly fragile (not to mention hardly
+ * portable, it would be a good idea to replace 
+ * that code. */
+
+#define JB_PC 148
+#define JB_SP 144
+#define JB_BP 136
+
+#endif /* _COMPAT_MACHINE_JMP_BUF_H */