* BuildPlatformMain supports overriding HOST_LIBROOT on the target now,

so one can set it to the static libroot, if desired.
* Generic attribute emulation:
  - Added build tool rm_attrs, a simple "rm" replacement, which also
    removes the attributes directory for a given file.
  - Added build/scripts/rm_attrs shell script, which wraps the
    invocation of the rm_attrs tool. If it doesn't exist yet, the
    ordinary rm is used.
  - The RM jam variable refers to the rm_attrs script now, i.e. whenever
    something is removed by the build system, the attributes are removed
    too (if the build tool has already been built, that is).
  - Removed the shell function attrrmrf() in build_haiku_image. We use
    the rm_attrs tool instead, if necessary.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24528 a95241bf-73f2-0310-859d-f6bbb57e9c96

build/jam/ImageRules

@@ -37,7 +37,7 @@ rule InitScript
 
 actions InitScript1
 {
-	rm -f $(1)
+	$(RM) $(1)
 	echo -n > $(1)
 }
 
@@ -678,7 +678,7 @@ rule BuildVMWareImage vmwareImage : plainImage : imageSize
 
 actions BuildVMWareImage1
 {
-	rm -f $(1)
+	$(RM) $(1)
 	$(2[1]) -h 64k -i$(IMAGE_SIZE)M $(1) &&
 	cat $(2[2]) >> $(1)
 }
@@ -857,7 +857,7 @@ rule BuildFloppyBootImage image : zbeos : archive
 
 actions BuildFloppyBootImage1
 {
-	rm -f $(<)
+	$(RM) $(<)
 	# make an empty image
 	dd if=/dev/zero of=$(<) bs=1k count=1440
 	# add zbeos
@@ -882,7 +882,7 @@ rule BuildCDBootImage image : bootfloppy : extrafiles
 
 actions BuildCDBootImage1
 {
-	rm -f $(<)
+	$(RM) $(<)
 	mkisofs -b $(BOOTIMG) -r -J -V bootimg -o $(<) $(>[1]) $(>[2-])
 }