Put upx stub loader at high end of ELF output file on linux,

and allow for block-by-block specification of filter and parameters.
	linker.cpp linker.h mem.cpp mem.h p_elf.h
	p_lx_elf.cpp p_lx_elf.h
	p_lx_exc.cpp p_lx_exc.h
	p_lx_sh.cpp  p_lx_sh.h
	p_unix.cpp p_unix.h
	packer.cpp packer.h
	stub/fold_elf86.asm stub/fold_exec86.asm stub/fold_sh86.asm
	stub/l_lx_elf.c  stub/l_lx_elf86.asm  stub/l_lx_elf86.lds
	stub/l_lx_exec.c stub/l_lx_exec86.asm stub/l_lx_exec86.lds
	stub/l_lx_sh.c   stub/l_lx_sh86.asm   stub/l_lx_sh86.lds
	stub/linux.hh

committer: jreiser <jreiser> 981084316 +0000

src/linker.h

@@ -40,6 +40,7 @@ public:
     const char *getLoader(int *llen);
     int getSection(const char *name, int *slen) const;
     int getLoaderSize() const { return olen; }
+    void setLoaderAlignOffset(int phase);
 
 protected:
     // little endian
@@ -59,6 +60,7 @@ private:
     int      nsections;
     int      frozen;
     int      align_hack;
+    int     align_offset;
 
 private:
     // disable copy and assignment