INSTALL: use meta package to install osgeo4w build dependencies

INSTALL

@@ -1,9 +1,9 @@
 QGIS
 Building QGIS from source - step by step
-Wednesday April 12, 2017
+Sunday January 14, 2018
 
 
-Last Updated: Wednesday April 12, 2017
+Last Updated: Sunday January 14, 2018
 Last Change : Wednesday April 12, 2017
 
 

doc/INSTALL.html

@@ -77,12 +77,12 @@ label{  background-color: #FFFFCC;
 <DIV CLASS="header" ID="header">
 <H1>QGIS</H1>
 <H2>Building QGIS from source - step by step</H2>
-<H3>Wednesday April 12, 2017</H3>
+<H3>Sunday January 14, 2018</H3>
 </DIV>
 
 <DIV CLASS="body" ID="body">
 <P>
-Last Updated: Wednesday April 12, 2017
+Last Updated: Sunday January 14, 2018
 Last Change : Wednesday April 12, 2017
 </P>
 <DIV CLASS="toc">

doc/msvc.t2t

@@ -40,19 +40,8 @@ For the QGIS build you need to install following packages from cygwin:
 
 and from OSGeo4W (select //Advanced Installation//):
 
-- expat
-- fcgi
-- gdal
-- grass
-- gsl-devel
-- iconv
-- pyqt4
-- qt4-devel
-- qwt5-devel-qt4
-- sip
-- spatialite
-- libspatialindex-devel
-- python-qscintilla
+- qgis-rel-deps
+-
 
 This will also select packages the above packages depend on.
 

src/gui/qgshistogramwidget.cpp

@@ -92,7 +92,7 @@ QgsHistogramWidget::~QgsHistogramWidget()
 
 static bool _rangesByLower( const QgsRendererRangeV2& a, const QgsRendererRangeV2& b )
 {
-  return a.lowerValue() < b.lowerValue() ? -1 : 0;
+  return a.lowerValue() < b.lowerValue();
 }
 
 void QgsHistogramWidget::setGraduatedRanges( const QgsRangeList &ranges )