Schematic: Fix Ltspice import with minor version number

- Files that contained a minor version number failed
- Now both works "Version X.X" and "Version X"

(cherry picked from commit 16b4ee92bb)

eeschema/sch_io/ltspice/ltspice_schematic.cpp

@@ -788,6 +788,7 @@ std::vector<LTSPICE_SCHEMATIC::LT_ASC> LTSPICE_SCHEMATIC::StructureBuilder()
         ascFile.SheetSize = VECTOR2I( 0, 0 );
         ascFile.Symbols = symbolArray;
         ascFile.Version = 0;
+        ascFile.VersionMinor = 0;
         ascFile.SheetNumber = 0;
 
         int lineNumber = 1;
@@ -1122,7 +1123,17 @@ std::vector<LTSPICE_SCHEMATIC::LT_ASC> LTSPICE_SCHEMATIC::StructureBuilder()
             else if( element == "VERSION" )
             {
                 wxString versionNumber = tokens[1];
-                ascFile.Version = integerCheck( versionNumber, lineNumber, fileName );
+                if( versionNumber.Contains( '.' ) )
+                {
+                    wxString majorStr = versionNumber.BeforeFirst( '.' );
+                    wxString minorStr = versionNumber.AfterFirst( '.' );
+                    ascFile.Version = integerCheck( majorStr, lineNumber, fileName );
+                    ascFile.VersionMinor = integerCheck( minorStr, lineNumber, fileName );
+                }
+                else
+                {
+                    ascFile.Version = integerCheck( versionNumber, lineNumber, fileName );
+                }
             }
 
             lineNumber++;

eeschema/sch_io/ltspice/ltspice_schematic.h

@@ -261,6 +261,7 @@ public:
     {
         VECTOR2I               SheetSize;
         int                    Version;
+        int                    VersionMinor;
         int                    SheetNumber;
         std::vector<LT_SYMBOL> Symbols;
         std::vector<LINE>      Lines;