Merge tag '7.6.beta2' into t/21855/public/21855

SageMath version 7.6.beta2

* tag '7.6.beta2': (610 commits)
  Updated SageMath version to 7.6.beta2
  trac 22188: fix duplicate reference, reST capitalization
  Revert change
  py3 imports in sage/matrix
  trac 22188: add missing `
  trac 22259 some details
  py3 get rid of cmp() in element_wrapper
  Trailing whitespace
  isomorphic function returned False, not None, when no isomorphism found
  21117: fix issues from review
  Fixing last doctest.
  Making the error messages consistent.
  Use relative imports in sage_setup/autogen/pari
  Import upstream PR 185 to deal with newer sed
  Add aspect multipliers to offsets
  Updated SageMath version to 7.6.beta1
  format arxiv link correctly
  py3 : do not call cmp() in code of real_mpfr
  trac #22254: remove period at the end of INPUT: section
  py3 remove cmp() in padics/morphism.pyx
  ...

Author: dkrenn

VERSION.txt

@@ -1 +1 @@
-SageMath version 7.5.1, Release Date: 2017-01-15
+SageMath version 7.6.beta2, Release Date: 2017-02-01

build/bin/sage-pip-install

@@ -15,7 +15,9 @@
 # --no-deps          : Don't install runtime dependencies from PyPI.
 # --no-index         : Don't look at the package index.
 #                      This also disables pip's version self-check.
-pip_install_flags="--ignore-installed --verbose --no-deps --no-index"
+# --isolated         : Don't read configuration files such as
+#                      ~/.pydistutils.cfg
+pip_install_flags="--ignore-installed --verbose --no-deps --no-index --isolated"
 
 # Consume any additional pip install arguments except the last one
 while [ $# -gt 1 ]; do

build/pkgs/configure/checksums.ini

@@ -1,4 +1,4 @@
 tarball=configure-VERSION.tar.gz
-sha1=a0c708866e3815006805e43db024a21b8ec46003
-md5=6632be3a1a99ac37eeb3446eab48691f
-cksum=3033031400
+sha1=c7e593913a4949263d8b13b178cdf98ddd7b4f5a
+md5=2206355c3f51dba81a33578469ef9351
+cksum=3793129936

build/pkgs/configure/package-version.txt

@@ -1 +1 @@
-201
+204

build/pkgs/database_pari/checksums.ini

@@ -1,4 +1,4 @@
 tarball=database_pari-VERSION.tar.bz2
-sha1=92dcb68e7a6def53ffc5fb82e3593d5b80c940cb
-md5=652d36d18ea300193957120815298be7
-cksum=2257060384
+sha1=dd2b168da033a9fca98ce5d9d81ad76fbc1739fb
+md5=0fb372a3c8de787f84c066f81511a276
+cksum=3988008667

build/pkgs/database_pari/package-version.txt

@@ -1 +1 @@
-20140908
+20161017

build/pkgs/dot2tex/SPKG.txt

@@ -7,8 +7,7 @@ by Graphviz a more LaTeX friendly look and feel. This is accomplished
 by converting xdot output from Graphviz to a series of PSTricks or
 PGF/TikZ commands.
 
-See http://www.fauskes.net/code/dot2tex/
-or http://dot2tex.googlecode.com/
+See https://github.com/kjellmf/dot2tex/
 
 == License ==
  * MIT

build/pkgs/eclib/checksums.ini

@@ -1,4 +1,4 @@
 tarball=eclib-VERSION.tar.bz2
-sha1=acd51ec5e7ab7be6a3151fe645320f71c6a11ede
-md5=ac1eee9c42b1b6987173f574b6f43744
-cksum=673064945
+sha1=b5098fe705dcea8f492e5e331ad8a69f5721898f
+md5=af8c339c44155ed813cb40f39fcfe344
+cksum=2757924773

build/pkgs/eclib/package-version.txt

@@ -1 +1 @@
-20160720
+20170104

build/pkgs/enum34/SPKG.txt

@@ -0,0 +1,9 @@
+= enum34 =
+
+== Description ==
+
+Python 3.4 Enum backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4
+
+An enumeration is a set of symbolic names (members) bound to unique,
+constant values. Within an enumeration, the members can be compared by
+identity, and the enumeration itself can be iterated over.