ENH: improve configuration of gperftools (now at version 2.5)

- support gperftools-none, gperftools-system configurations
  as per other third-party packages.

STYLE: clean up more environment variables

CONFIG: testing adios rule

wmake/rules/General/ADIOS

@@ -0,0 +1,19 @@
+#-------------------------------*- makefile -*---------------------------------
+# ADIOS includes/libraries
+
+sinclude $(GENERAL_RULES)/mplib$(WM_MPLIB)
+sinclude $(RULES)/mplib$(WM_MPLIB)
+
+ADIOS_INC = -I$(ADIOS_ARCH_PATH)/include
+
+ADIOS_LIBS := \
+    -L$(ADIOS_ARCH_PATH)/lib$(WM_COMPILER_LIB_ARCH) \
+    -ladios_$(FOAM_MPI)
+
+# ADIOS dependent libraries. Eg, after -L/usr/lib64 ...
+# Query as sequential to reduce mpi-dependencies
+
+ADIOS_LIBS +=
+    $(shell $(ADIOS_ARCH_PATH)/bin/adios_config -s -l | sed -e 's@^.*-L/usr/lib[^ ]*@@')
+
+#------------------------------------------------------------------------------