perldelta: add obituary for AMORETTE
Spelling correction.
perldelta: clarify the deprecation of non-PerlIO perl
perldelta: collapse a bit of vertical space
perldelta: remove a literally incorrect "literal"
perldelta: various fixes suggested by Dave Mitchell
Address [perl #117999] for now by skipping known bad test on AIX
Clarified perldelta entry for UID/GID magic variables
perldelta: add another hash overhaul cross reference
expand documentation of the \cK change
perldelta clarification
Fix typo in perldelta

Spotted by Zsbán Ambrus
perldelta: Use 'Here doc' consistently sans dash

This corresponds to perldiag, and was suggested by Zsbán Ambrus.
perldelta: Clarify removal vs deprecation of modules
perldelta: restate the changes to ${x} versus $x

Credit for improvements made in this commit to to khw.  Blame for
anything else goes to rjbs.
bump patchlevel and perlhist for RC4
Introduce sysroot variable to Configure

This is borrowed from gcc and allows us to indicate the logical root
directory for headers and libraries, under which all -I and -L are
searched for. This patch adjusts Configure to search under $sysroot
(if supplied) for headers and libraries, instead of /.

$libsearchpth is also introduced to track the absolute paths of
found libraries. $libpath continues to list the relative paths to
pass to -L.
Pass the --sysroot flag to the compiler, if -Dsysroot= is used.

This is a preparation step for better Cross-Compiling support.
Use the pure "sysroot" value from $Config to lookup sysroot path.
Useful in cross-compiling.
Rollback sysrootflag idea, add --sysroot to ccflags etc so that make in ExtUtils::MakeMaker etc will use it