package/python-pyparsing: needs python3

python-pyparsing dropped python2 support since version 3.0.0:
https://github.com/pyparsing/pyparsing/blob/master/docs/whats_new_in_3_0_0.rst#python-2-x-no-longer-supported
resulting in the following build failure since bump to version 3.0.6 in
commit 7affc7827aee0e07ec94d3b4d91c2e23bda8d937:

  File "setup.py", line 8, in <module>
    from pyparsing import __version__ as pyparsing_version
  File "/home/buildroot/autobuild/instance-0/output-1/build/python-pyparsing-3.0.6/pyparsing/__init__.py", line 100
    major: int
         ^
SyntaxError: invalid syntax

Fixes:
 - http://autobuild.buildroot.org/results/8ac5224f4b6c2c59035dbfb53541e76f58b15e47

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/python-httplib2/Config.in

@@ -1,9 +1,8 @@
 config BR2_PACKAGE_PYTHON_HTTPLIB2
 	bool "python-httplib2"
-	select BR2_PACKAGE_PYTHON_ZLIB if BR2_PACKAGE_PYTHON
-	select BR2_PACKAGE_PYTHON_SSL if BR2_PACKAGE_PYTHON
-	select BR2_PACKAGE_PYTHON3_ZLIB if BR2_PACKAGE_PYTHON3
-	select BR2_PACKAGE_PYTHON3_SSL if BR2_PACKAGE_PYTHON3
+	depends on BR2_PACKAGE_PYTHON3 # python-pyparsing
+	select BR2_PACKAGE_PYTHON3_ZLIB
+	select BR2_PACKAGE_PYTHON3_SSL
 	select BR2_PACKAGE_PYTHON_PYPARSING # runtime
 	help
 	  httplib2 is a comprehensive HTTP client library, httplib2.py

package/python-pyparsing/Config.in

@@ -1,5 +1,6 @@
 config BR2_PACKAGE_PYTHON_PYPARSING
 	bool "python-pyparsing"
+	depends on BR2_PACKAGE_PYTHON3
 	help
 	  The pyparsing module is an alternative approach to creating
 	  and executing simple grammars, vs. the traditional lex/yacc