Submitted upstream:

	https://springrts.com/mantis/view.php?id=4731

--- rts/lib/headlessStubs/glstub.c	2014-10-07 16:09:52 -0400
+++ rts/lib/headlessStubs/glstub.c	2015-04-08 14:03:33 -0400
@@ -131,5 +131,5 @@
 GLAPI void APIENTRY glGetShaderiv(GLuint shader, GLenum pname, GLint *params) {}
 GLAPI void APIENTRY glGetShaderInfoLog(GLuint shader, GLsizei bufSize, GLsizei *length, GLchar *infoLog) {}
-GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar* *string, const GLint *length) {}
+GLAPI void APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar* const *string, const GLint *length) {}
 
 GLAPI void APIENTRY glUniform1fARB(GLint location, GLfloat v0) {}