* [kernel][mem] Multiple instances of small memory allocation algorithm

* [kernel][mem] Change small memory management algorithm memory header flag

* [kernel][mem] Fix assertion problem

* [kernel][slab] Multiple instances of slab memory management algorithm

* [kernel][memheap] Remove rt_malloc/rt_free/rt_realloc and other related memory interfaces

* [kernel][mem] Clean up memory space of small memory management objects

* [kernel][kservice] Add memory application interface and thread protection interface

* [kernel][kservice] Fix function return value problem

* [kernel][memheap] Optimize memheaptrace print

* [kernel][memheap] Support best mode

* [kernel][memory] Remove semaphore lock

* [kernel][memheap] Add locked flag

* [kernel][memory] Support malloc memory in interrupt

* [kernel][memheap] Add 'memheapcheck' cmd

* [kernel][mem] Fix failure to request full memory

* [kernel][memheap] Fix compilation warning

* [kernel][mem] Fix mem realloc ASSERT

* [examples][testcases] Add small mem testcase

* [examples][mem_tc] Modify test memory size

* [examples][testcases] Add slab memory management algorithm test case

* [examples][testcases] fix small memory management algorithm test case

* [kernel][memory] Adjusting memory allocation algorithm object definition and interface

* [kernel][memory] Fix compilation warning

* [examples][utest] Fix mem test case

* [examples][utest] fix slab test case

* [utest][testcases] Shorten test time

* [kernel][memory] Formatting code

* [examples][utest] Adjust test run time

* [examples][utest] Formatting code

* [bsp] update all rtconfig.h

    1. fix heap management for stm32f0xx(SRAM=8k)
    2. add USART1, USART2 driver for stm32f051R8
    3. fix finsh support for stm32f0x
    4. fix board components initial for stm32f0x and open debug msg
    5. add led driver(pc9) and test thread for stm32f0discovery board
    6. add init thread for stm32f0x do components initial
    7. add rcc initial for stm32f0x in rt_hw_board_init()
    8. add print rcc freq information function

the console output example is:
    SYSCLK_Frequency is 48000000HZ
    PCLK_Frequency is 48000000HZ
    HCLK_Frequency is 48000000HZ
    CECCLK_Frequency is 32786HZ
    ADCCLK_Frequency is 14000000HZ
    USART1CLK_Frequency is 48000000HZ
    I2C1CLK_Frequency is 8000000HZ
    SystemCoreClock is 48000000HZ
    initialize rti_start:0 done

    \ | /
    - RT -     Thread Operating System
    / | \     1.2.0 build Nov 15 2013
    2006 - 2013 Copyright by rt-thread team
    do components intialization.
    initialize rti_board_end:0 done
    initialize rt_hw_led_init:32768 done
    initialize finsh_system_init:0 done
    finsh>>

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2144 bbd45198-f89e-11dd-88c7-29a3b14d5316

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2143 bbd45198-f89e-11dd-88c7-29a3b14d5316