Make improvements

- This commit mints a new release of APE Loader v1.2 which supports
  loading ELF programs with a non-contiguous virtual address layout
  even though we've never been able to take advantage of it, due to
  how `objcopy -SO binary` fills any holes left by PT_LOAD. This'll
  change soon, since we'll have a new way of creating APE binaries.

- The undiamonding trick with our ioctl() implementation is removed
  since POSIX has been killing ioctl() for years and they've done a
  much better job. One problem it resolves, is that ioctl(FIONREAD)
  wasn't working earlier and that caused issues when building Emacs

ape/apeinstall.sh

@@ -12,13 +12,8 @@ echo "Author:  Justine Tunney <jtunney@gmail.com>"  >&2
 ################################################################################
 # INSTALL APE LOADER SYSTEMWIDE
 
-if [ -f o/depend ]; then
-  # mkdeps.com build was successfully run so assume we can build
-  echo >&2
-  echo "recompiling ape loader" >&2
-  echo "running: make -j8 o//ape" >&2
-  make -j8 o//ape || exit
-  echo "done" >&2
+if [ -f o/depend ] && make -j8 o//ape; then
+  echo "successfully recompiled ape loader" >&2
 elif [ -d build/bootstrap ]; then
   # if make isn't being used then it's unlikely the user changed the sources
   # in that case the prebuilt binaries should be completely up-to-date