bump buildroot to 2019.02.2

bsp/buildroot/package/python3/0019-Add-an-option-to-disable-expat.patch

@@ -23,7 +23,7 @@ diff --git a/Makefile.pre.in b/Makefile.pre.in
 index 6a6bc082cd..dc4b92b6fe 100644
 --- a/Makefile.pre.in
 +++ b/Makefile.pre.in
-@@ -1265,7 +1265,7 @@ LIBSUBDIRS=	site-packages \
+@@ -1273,7 +1273,7 @@ LIBSUBDIRS=	site-packages \
  		logging csv wsgiref urllib \
  		ctypes ctypes/macholib \
  		idlelib idlelib/Icons \
@@ -32,7 +32,7 @@ index 6a6bc082cd..dc4b92b6fe 100644
  		importlib \
  		turtledemo \
  		multiprocessing multiprocessing/dummy \
-@@ -1346,6 +1346,10 @@ ifeq (@CURSES@,yes)
+@@ -1354,6 +1354,10 @@ ifeq (@CURSES@,yes)
  LIBSUBDIRS += curses
  endif
  
@@ -47,7 +47,7 @@ diff --git a/configure.ac b/configure.ac
 index 5896b39ff9..6f21482207 100644
 --- a/configure.ac
 +++ b/configure.ac
-@@ -2905,13 +2905,21 @@ PKG_PROG_PKG_CONFIG
+@@ -2969,13 +2969,21 @@ PKG_PROG_PKG_CONFIG
  AC_SUBST(DISABLED_EXTENSIONS)
  
  # Check for use of the system expat library
@@ -78,7 +78,7 @@ diff --git a/setup.py b/setup.py
 index 76429e1326..38aa5e605e 100644
 --- a/setup.py
 +++ b/setup.py
-@@ -1485,7 +1485,7 @@ class PyBuildExt(build_ext):
+@@ -1490,7 +1490,7 @@ class PyBuildExt(build_ext):
          #
          # More information on Expat can be found at www.libexpat.org.
          #