[latexila] build: update --target-glib to 2.50

[Sébastien Wilmet <swilmet src gnome org>]

commit f91952abd2f0baa94b0e9ea2158ce55d2184f70f
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Oct 22 13:17:51 2016 +0200

    build: update --target-glib to 2.50
    
    To have better C code generation (hopefully).

 configure.ac    |    4 ++--
 src/Makefile.am |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 786a5df..7f115f9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,12 +25,12 @@ LT_INIT
 
 # Required dependencies versions
 # Update also the --target-glib option in src/Makefile.am.
-GLIB_REQUIRED_VERSION="2.40"
+GLIB_REQUIRED_VERSION="2.50"
 GTK_REQUIRED_VERSION="3.20"
 GTKSOURCEVIEW_REQUIRED_VERSION="3.23.1"
 GTEF_REQUIRED_VERSION="0.1.1"
 GSPELL_REQUIRED_VERSION="1.0"
-VALA_REQUIRED_VERSION="0.26"
+VALA_REQUIRED_VERSION="0.34"
 GEE_REQUIRED_VERSION="0.10"
 
 AC_SUBST([GLIB_REQUIRED_VERSION])
diff --git a/src/Makefile.am b/src/Makefile.am
index c5d8cba..6481dd2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -12,7 +12,7 @@ VALAFLAGS =                   \
        --pkg gspell-1          \
        --pkg gee-0.8           \
        --pkg posix             \
-       --target-glib=2.40      \
+       --target-glib=2.50      \
        --vapidir liblatexila   \
        --pkg latexila