python3: Update to version 3.7.4

- Update setuptools to 40.8.0
- Update pip to 19.0.3
- Refreshed patches
- Removed 4 patches (2 of them was included in 3.7.3 and other two are
included in this release)

Makefile python3:
- Move PKG_MAINTAINER above PKG_LICENSE

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

lang/python/python3/patches/016-adjust-config-paths.patch

@@ -1,6 +1,6 @@
 --- a/Lib/distutils/sysconfig.py
 +++ b/Lib/distutils/sysconfig.py
-@@ -421,6 +421,7 @@ def _init_posix():
+@@ -446,6 +446,7 @@ def _init_posix():
          platform=sys.platform,
          multiarch=getattr(sys.implementation, '_multiarch', ''),
      ))
@@ -10,7 +10,7 @@
      global _config_vars
 --- a/Lib/sysconfig.py
 +++ b/Lib/sysconfig.py
-@@ -337,6 +337,7 @@ def get_makefile_filename():
+@@ -344,6 +344,7 @@ def get_makefile_filename():
  
  
  def _get_sysconfigdata_name():
@@ -20,7 +20,7 @@
          abi=sys.abiflags,
 --- a/Makefile.pre.in
 +++ b/Makefile.pre.in
-@@ -1398,7 +1398,7 @@ libinstall:	build_all $(srcdir)/Modules/
+@@ -1400,7 +1400,7 @@ libinstall:	build_all $(srcdir)/Modules/
  			esac; \
  		done; \
  	done
@@ -29,7 +29,7 @@
  		$(DESTDIR)$(LIBDEST); \
  	$(INSTALL_DATA) $(srcdir)/LICENSE $(DESTDIR)$(LIBDEST)/LICENSE.txt
  ifeq (@COMPILE_ALL_TESTS@,yes)
-@@ -1543,7 +1543,7 @@ sharedinstall: sharedmods
+@@ -1545,7 +1545,7 @@ sharedinstall: sharedmods
  		--install-scripts=$(BINDIR) \
  		--install-platlib=$(DESTSHARED) \
  		--root=$(DESTDIR)/
@@ -40,7 +40,7 @@
  # Here are a couple of targets for MacOSX again, to install a full
 --- a/configure
 +++ b/configure
-@@ -15148,7 +15148,7 @@ LDVERSION='$(VERSION)$(ABIFLAGS)'
+@@ -15292,7 +15292,7 @@ LDVERSION='$(VERSION)$(ABIFLAGS)'
  $as_echo "$LDVERSION" >&6; }
  
  
@@ -51,7 +51,7 @@
    LIBPL='$(prefix)'"/lib/python${VERSION}/config-${LDVERSION}-${PLATFORM_TRIPLET}"
 --- a/configure.ac
 +++ b/configure.ac
-@@ -4736,7 +4736,7 @@ AC_MSG_RESULT($LDVERSION)
+@@ -4753,7 +4753,7 @@ AC_MSG_RESULT($LDVERSION)
  
  dnl define LIBPL after ABIFLAGS and LDVERSION is defined.
  AC_SUBST(PY_ENABLE_SHARED)