package/fltk: bump to version 1.3.7

Update indentation in hash file (two spaces)

https://github.com/fltk/fltk/blob/release-1.3.7/CHANGES

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/fltk/fltk.hash

@@ -1,5 +1,5 @@
-# From http://www.fltk.org/software.php?VERSION=1.3.5
-md5 e85017defd5a03ae82e634311db87bbf fltk-1.3.5-source.tar.gz
+# From http://www.fltk.org/software.php?VERSION=1.3.7
+md5  b28470d0509d00633d21bee9b65167f8  fltk-1.3.7-source.tar.bz2
 # Locally generated
-sha256 8729b2a055f38c1636ba20f749de0853384c1d3e9d1a6b8d4d1305143e115702  fltk-1.3.5-source.tar.gz
-sha256 57dd381e713fb309fb7dd85c3c38b274557ecb333475d0f1d65a5f06ad85c9a6  COPYING
+sha256  5ff1e90766ff4216e78e9a19a9bf527e6258f04accccd4429e9bb829b01d690d  fltk-1.3.7-source.tar.bz2
+sha256  57dd381e713fb309fb7dd85c3c38b274557ecb333475d0f1d65a5f06ad85c9a6  COPYING

package/fltk/fltk.mk

@@ -4,8 +4,8 @@
 #
 ################################################################################
 
-FLTK_VERSION = 1.3.5
-FLTK_SOURCE = fltk-$(FLTK_VERSION)-source.tar.gz
+FLTK_VERSION = 1.3.7
+FLTK_SOURCE = fltk-$(FLTK_VERSION)-source.tar.bz2
 FLTK_SITE = http://fltk.org/pub/fltk/$(FLTK_VERSION)
 FLTK_INSTALL_STAGING = YES
 # We force --libdir=/usr/lib, because by default, it is set to