branch master updated (6e119ba -> 1d008d9)

[Ludovic Courtès]

civodul pushed a change to branch master
in repository guix.

      from  6e119ba   gnu: xfig, transfig: Update home pages.
       new  03870da   Add (guix profiling).
       new  252c408   memoization: Add profiling support.
       new  6c80641   memoization: Profiling support keeps track of lookups and 
hits.
       new  3d19b7f   derivations: Use 'define-immutable-record-type' as 
appropriate.
       new  1d008d9   derivations: 'derivation-hash' assumes inputs are 
coalesced.

The 5 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
listed as "adds" were already present in the repository and have only
been added to this reference.


Summary of changes:
 Makefile.am          |   1 +
 guix/derivations.scm |  11 ++--
 guix/memoization.scm | 144 +++++++++++++++++++++++++++++++++++++++++++--------
 guix/profiling.scm   |  52 +++++++++++++++++++
 guix/store.scm       |  19 ++++---
 5 files changed, 192 insertions(+), 35 deletions(-)
 create mode 100644 guix/profiling.scm